/* ============================================
   DeepThought — Dark & Techy Theme
   Based on Electric Dusk, customized
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700&family=DM+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --color-bg: #0a0810;
  --color-surface: #13101f;
  --color-surface-2: #1c1730;
  --color-text: #eae6f5;
  --color-text-muted: #8a82a0;
  --color-accent: #8b5cf6;
  --color-accent-hover: #7c4ddb;
  --color-cyan: #06d6a0;
  --color-cyan-hover: #05b88a;
  --color-border: #2d2640;
  --color-glow-purple: rgba(139, 92, 246, 0.3);
  --color-glow-cyan: rgba(6, 214, 160, 0.2);
  --font-display: 'Sora', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 200ms ease;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--transition);
}
a:hover {
  text-decoration-color: var(--color-accent);
}

img {
  max-width: 100%;
  display: block;
}

/* ---- Skip Link ---- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  padding: 8px 16px;
  background: var(--color-accent);
  color: #fff;
  z-index: 10000;
  font-size: 0.875rem;
  border-radius: var(--radius);
  text-decoration: none;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
}

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: padding var(--transition), background var(--transition);
  background: rgba(10, 8, 16, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  padding: 12px 0;
  border-bottom-color: var(--color-border);
  background: rgba(10, 8, 16, 0.9);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  font-family: var(--font-body);
}
.nav-links a:hover {
  color: var(--color-text);
}

.nav-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
}
.nav-cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

.nav-mobile-menu {
  display: none;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .nav-mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #0a0810;
    z-index: 999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
  }
  .nav-mobile-menu.open {
    display: flex;
  }
  .nav-mobile-menu a {
    color: var(--color-text);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
  }
  .nav-mobile-close {
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 2rem;
    cursor: pointer;
  }
}

/* ---- Hero Section ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 100px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--color-glow-purple) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse 6s ease-in-out infinite;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-glow-cyan) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse 8s ease-in-out 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--color-cyan);
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-cyan);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw + 1rem, 5.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 30px var(--color-glow-purple);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--color-glow-purple);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-text-muted);
  background: var(--color-surface);
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ---- Section Styling ---- */
section {
  padding: 100px 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-description {
  color: var(--color-text-muted);
  max-width: 560px;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ---- Features Section ---- */
.features {
  background: var(--color-bg);
}

.features-header {
  margin-bottom: 64px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* Featured card (span 2) */
.feature-card.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-card.featured {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
  .feature-card.featured {
    grid-column: span 1;
  }
}

/* ---- How It Works ---- */
.how-it-works {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.how-header {
  text-align: center;
  margin-bottom: 72px;
}

.how-header .section-description {
  margin: 0 auto;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: calc(16.66% + 24px);
  right: calc(16.66% + 24px);
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
  opacity: 0.3;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  position: relative;
  z-index: 1;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.step p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  max-width: 280px;
  margin: 0 auto;
  line-height: 1.65;
}

@media (max-width: 768px) {
  .steps {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .steps::before {
    display: none;
  }
}

/* ---- Code Preview ---- */
.code-preview {
  background: var(--color-bg);
}

.code-preview-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.code-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.code-block-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
}

.code-dot:nth-child(1) { background: #ff5f57; border-color: #e0443e; }
.code-dot:nth-child(2) { background: #febc2e; border-color: #d4a528; }
.code-dot:nth-child(3) { background: #28c840; border-color: #1aab29; }

.code-block-title {
  margin-left: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.code-block pre {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  overflow-x: auto;
  color: var(--color-text-muted);
}

.code-block pre .keyword { color: var(--color-accent); }
.code-block pre .func { color: var(--color-cyan); }
.code-block pre .string { color: #f0a050; }
.code-block pre .comment { color: #4a4460; }

@media (max-width: 1024px) {
  .code-preview-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* ---- Pricing ---- */
.pricing {
  background: var(--color-bg);
}

.pricing-header {
  text-align: center;
  margin-bottom: 64px;
}

.pricing-header .section-description {
  margin: 0 auto;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: transform var(--transition);
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.popular {
  border-color: var(--color-accent);
  position: relative;
  box-shadow: 0 0 60px rgba(139, 92, 246, 0.15);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 20px;
  border-radius: 100px;
  font-family: var(--font-display);
}

.pricing-tier {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.pricing-price {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 12px 0 28px;
  line-height: 1.6;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-cyan);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-card .btn {
  width: 100%;
  justify-content: center;
}

@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
    margin: 0 auto;
  }
}

/* ---- Contact / Waitlist ---- */
.contact {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  font-family: var(--font-body);
}

.form-group input,
.form-group textarea {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-glow-purple);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1024px) {
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

/* ---- Footer ---- */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 16px;
  line-height: 1.7;
}

.footer h3 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-socials a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-socials a:hover {
  color: var(--color-accent);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: span 2;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-brand {
    grid-column: span 1;
  }
  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }
}

/* ---- Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}